Isotopically Labeled Compounds
Cayman Chemical ThIodIglycolIc AcId-d4 5mg
An internal standard for the quantification of TDGA by GC- or LC-MS
Medchemexpress LLC 16α-Hydroxyestrone | 566-76-7 | 99.7% | 286.37 | 1 MG
16α-Hydroxyestrone (16αOHE) is a major metabolite of Estradiol. It can be used for the research of metabolic diseases. Increasing levels of active estrogen metabolites, such as 16α-Hydroxyestrone and E3, are associated with increased bone mineral density.
- Endogenous metabolite
- Steroid structure
- Appearance: solid, white to off-white
- Solubility: ≥ 250 mg/mL in DMSO
Medchemexpress LLC Sphingosine (d14:1) | 24558-60-9 | MFCD08703027 | 99.7% | 243.39 | C14H29NO2 | 1 MG
Sphingosine (d14:1) is a bioactive sphingolipid that functions as a protein kinase C (PKC) inhibitor supplied as a high-purity solid for research applications in biochemical and cell biology studies.
- Bioactive sphingolipid that inhibits protein kinase C (PKC).
- High purity (99.7%) suitable for analytical and research use.
- Available as a solid in a 1 MG pack for small-scale experiments.
- Powder stable at -20°C for long-term storage (typical handling recommended).
- Molecular formula C14H29NO2 and molecular weight 243.39.
Medchemexpress LLC L-Leucine-1-13C,15N | 80134-83-4 | 133.16 | 50 MG
L-Leucine-1-13C,15N is the 13C- and 15N-labeled L-Leucine. L-Leucine is an essential branched-chain amino acid (BCAA), which activates the mTOR signaling pathway. This compound can be used as a tracer and as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Used as a tracer.
- Used as an internal standard for quantitative analysis by NMR, GC-MS, or LC-MS.
- Activates the mTOR signaling pathway.
- 13C- and 15N-labeled L-Leucine.
- Essential branched-chain amino acid (BCAA).
Medchemexpress LLC Phytanic acid-d3 | 1383920-40-8 | 99.1% | 315.55 | C20H37D3O2 | 5 MG
Phytanic acid-d3 is a deuterium-labeled analogue of phytanic acid used as an internal standard for accurate quantitation by GC- or LC-MS in biochemical and clinical research. It has molecular formula C20H37D3O2, molecular weight 315.55, and CAS 1383920-40-8, and is supplied in research-scale quantities for analytical use.
- Intended for use as an internal standard in GC- or LC-MS assays.
- Deuterium labeling provides a distinct mass shift for reliable differentiation from the native analyte.
- Coelutes with native phytanic acid to support accurate quantitation.
- Offered in small research-scale quantities suitable for method development and standard curves.
- High isotopic and chemical purity supports precise measurement.
Medchemexpress LLC Bexarotene-d4 | 2182068-00-2 | 98.5% | C24H24D4O2 | 10MG
Bexarotene-d4 is a deuterium-labeled isotopologue of bexarotene supplied as a research-grade analytical standard for use as an internal standard and tracer in quantitative mass spectrometry and pharmacokinetic studies involving retinoid X receptor ligands. The material is provided as a high-purity solid suitable for analytical applications.
- Deuterium-labeled tracer for accurate mass spectrometry quantitation.
- High purity (98.5%) suitable for analytical standards.
- Molecular formula C24H24D4O2 and molecular weight ~352.50 g/mol.
- Available in small vial sizes convenient for laboratory use.
- For research use only; not for human or clinical applications.
Medchemexpress LLC 1H-1,2,4-triazole-1,3,5-d3 | 43088-92-2 | 99.8% | 72.08 | C2D3N3 | 10mg
NSC 83128-d3 is the deuterium labeled NSC 83128[1]
Medchemexpress LLC Phenylmethan-d2-ol | 21175-64-4 | MFCD00084124 | 99.0% | 110.15 | C7H6D2O | 5 MG
Phenylmethan-d2-ol is a deuterium-labeled benzyl alcohol used as a stable isotope tracer and reference standard in analytical chemistry, mass spectrometry, and synthetic labeling. It is characterized by molecular formula C7H6D2O, molecular weight 110.15 g/mol, and a reported chemical purity of 99.0%.
- Deuterium-labeled benzyl alcohol for tracer and analytical use.
- High chemical purity: 99.0%.
- Molecular formula C7H6D2O and molecular weight 110.15 g/mol.
- Available in small quantities suitable for analytical standards, including 5 mg packages.
- Supplied with a datasheet and certificate of analysis for batch verification.
Medchemexpress LLC Adipic acid-d8 | 52089-65-3 | 99.7% | 154.19 g/mol | C6H2D8O4 | 10 MG
Adipic acid-d8 is the deuterium-labeled isotopologue of adipic acid (hexanedioic acid) used as an internal standard and reference material for analytical chemistry and mass spectrometry. It provides a predictable mass shift that supports accurate quantitation, method validation, and trace-level analysis in LC and GC workflows.
- Deuterium-labeled (d8) adipic acid for mass-shifted internal standardization.
- CAS number 52089-65-3 for unambiguous identification.
- Chemical formula C6H2D8O4 and molecular weight 154.19 g/mol.
- High chemical purity suitable for analytical use (reported 99.65%).
- Compatible with LC-MS/MS and GC-MS workflows.
- Supplied in small pack sizes appropriate for method development and standards preparation.
Cayman Chemical Fluconazole-d4 1mg
An internal standard for the quantification of fluconazole by GC- or LC-MS
Cayman Chemical UrsodeoxycholIc AcId-d4 1mg
An internal standard for the quantification of ursodeoxycholic acid by GC- or LC-MS
Cayman Chemical DopamIn-d4hydrochlorIde 10mg
An internal standard for the quantification of dopamine by GC- or LC-MS
Sigma Aldrich Fine Chemicals Biosciences DOPAMINE-1 1 2 2-D4 HYDROCHL5G
Dopamine-1,1,2,2-d4 hydrochloride, 5g, 203633-19-6
Medchemexpress LLC Dihydrouracil-d4 | 334473-41-5 | 99.97% | 118.13 | 1 MG
Dihydrouracil-d4 is the deuterium-labeled form of Dihydrouracil, a metabolite of Uracil. It can be used as a marker for identifying individuals with dihydropyrimidine dehydrogenase (DPD)-deficiency. This compound is intended for research use only, serving as a tracer and internal standard for quantitative analysis. Deuteration has gained attention for its potential to influence the pharmacokinetic and metabolic profiles of drugs.
- Can be used as a tracer.
- Can be used as an internal standard for quantitative analysis via NMR, GC-MS, or LC-MS.
- Serves as a marker for identifying individuals with dihydropyrimidine dehydrogenase (DPD)-deficiency.
- Intended for research use only.
- Deuteration can impact pharmacokinetic and metabolic profiles of drugs.
Cambridge Isotope Laboratories L-PROLINE (D7, 98%; 15N, 98%), 0.25 G
L-PROLINE (D7, 98%; 15N, 98%), 0.25 G